EP 1151505 A1 20011107 - GAIN FLATTENING IN FIBER AMPLIFIERS
Title (en)
GAIN FLATTENING IN FIBER AMPLIFIERS
Title (de)
VERSTÄRKUNGSGLÄTTUNG IN FASERVERSTÄRKERN
Title (fr)
EGALISATION DU GAIN DANS DES AMPLIFICATEURS A FIBRES
Publication
Application
Priority
- US 0000159 W 20000105
- US 24555499 A 19990205
Abstract (en)
[origin: WO0046890A1] An optical amplifier has a gain profile which is substantially flat and independent, over a wide range, of the pump power, power of the input signals, and the number of input signals. The amplifier utilizes an optical resonator having a gain medium whose gain broadening behaves inhomogeneously by pumping the gain medium at at least one wavelength in at least one absorption tail of the gain medium. The resonator is a ring resonator that preferably includes an erbium-doped fiber. Codopants may be added to the fiber to enhance the inhomogeneous broadening effect. A method of gain flattening introduces a pump signal into a gain medium. The pump signal has a wavelength in the tail of the absorption profile of the gain medium. A plurality of optical signals at different wavelengths are introduced into the gain medium. Stimulated emission within the gain medium clamps the gain of the gain medium.
IPC 1-7
IPC 8 full level
H01S 3/06 (2006.01); H01S 3/094 (2006.01); H01S 3/10 (2006.01); H01S 3/13 (2006.01); H04B 10/16 (2006.01); H04B 10/17 (2006.01); H04B 10/2507 (2013.01); H04B 10/29 (2013.01); H04B 10/294 (2013.01); H01S 3/131 (2006.01); H01S 3/16 (2006.01)
CPC (source: EP KR US)
G02B 6/00 (2013.01 - KR); H01S 3/1302 (2013.01 - EP US); H04B 10/296 (2013.01 - EP US); H01S 3/094042 (2013.01 - EP US); H01S 3/131 (2013.01 - EP US); H01S 3/1608 (2013.01 - EP US); H01S 3/1691 (2013.01 - EP US); H01S 2301/04 (2013.01 - EP US)
Citation (search report)
See references of WO 0046890A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0046890 A1 20000810; AU 3207100 A 20000825; CA 2360925 A1 20000810; CA 2360925 C 20070710; CN 100592582 C 20100224; CN 1339188 A 20020306; DE 60018908 D1 20050428; DE 60018908 T2 20060330; EP 1151505 A1 20011107; EP 1151505 B1 20050323; JP 2002539601 A 20021119; JP 4574861 B2 20101104; KR 100695376 B1 20070315; KR 20010113677 A 20011228; US 6356385 B1 20020312
DOCDB simple family (application)
US 0000159 W 20000105; AU 3207100 A 20000105; CA 2360925 A 20000105; CN 00803494 A 20000105; DE 60018908 T 20000105; EP 00909886 A 20000105; JP 2000597871 A 20000105; KR 20017009892 A 20010804; US 24555499 A 19990205